Patents by Inventor Koen De Jongh

Koen De Jongh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for determining the cut-off wavelength of an optical fibre as well as a device suitable for that purpose
    Patent number: 7151249
    Abstract: The present invention relates to a method and a device for determining the cut-off wavelength of an optical fiber. A first aspect of the present invention is to provide a method for determining the cut-off wavelength of an optical fiber, which method provides a stable measurement, which measurement is substantially independent of the exact fiber position.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: December 19, 2006
    Assignee: Draka Fibre Technology B.V.
    Inventors: Pieter Matthijsse, Koen De Jongh, Gerardus Franciscus Cleven
  • Method for determining the cut-off wavelength of an optical fibre as well as a device suitable for that purpose
    Publication number: 20050035279
    Abstract: The present invention relates to a method and a device for determining the cut-off wavelength of an optical fibre. A first aspect of the present invention is to provide a method for determining the cut-off wavelength of an optical fibre, which method provides a stable measurement, which measurement is substantially independent of the exact fibre position.
    Type: Application
    Filed: July 9, 2004
    Publication date: February 17, 2005
    Applicant: DRAKA FIBRE TECHNOLOGY B.V.
    Inventors: Pieter Matthijsse, Koen De Jongh, Gerardus Franciscus Cleven
  • Method of characterising one or more properties of optical fibres
    Publication number: 20030147607
    Abstract: A method of characterising one or more properties of optical fibres obtained from an optical preform, in which the optical fibre is subdivided into separate length portions by winding each of said separate length portions on a coil, which coil is encoded, after which one or more properties of an encoded length portion are measured.
    Type: Application
    Filed: November 22, 2002
    Publication date: August 7, 2003
    Applicant: Draka Fibre Technology B.V.
    Inventors: Koen De Jongh, Peter Johannes Theodorus Pleunis